39278148668 has 24 divisors (see below), whose sum is σ = 75649155120. Its totient is φ = 17695704320.

The previous prime is 39278148659. The next prime is 39278148691. The reversal of 39278148668 is 86684187293.

It is a self number, because there is not a number n which added to its sum of digits gives 39278148668.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3944963 + ... + 3954906.

It is an arithmetic number, because the mean of its divisors is an integer number (3152048130).

Almost surely, 2^39278148668 is an apocalyptic number.

It is an amenable number.

39278148668 is a deficient number, since it is larger than the sum of its proper divisors (36371006452).

39278148668 is a wasteful number, since it uses less digits than its factorization.

39278148668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7899997 (or 7899995 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 62.

The spelling of 39278148668 in words is "thirty-nine billion, two hundred seventy-eight million, one hundred forty-eight thousand, six hundred sixty-eight".